Question

select all that apply
select all the features that are unique to mammals.

uniform teeth
jaws
mammary glands
three - chambered heart
three middle ear bones
hair

Explanation:

Mammals are characterized by several unique features. Mammary glands are used for nursing young. Three middle ear bones (malleus, incus, stapes) are a distinct mammalian trait. Hair is also a unique mammalian feature. Uniform teeth are not unique (many non - mammals have uniform teeth). Jaws are present in many vertebrates (not unique to mammals). A three - chambered heart is not a mammalian feature (mammals have a four - chambered heart).

Answer:

mammary glands, three middle ear bones, hair